Wrench.



W. G. DIUKER.

WRENCH.

APPLICATION FILED NOV.9.1908.

935 ,002. Patented Sept. 28, 1909.

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um/nag UNITED STATES PATENT OFFISE.

WALTER G. DICKER, 0F GILBY, NORTH DAKOTA.

WRENCH.

To all whom it may concern:

Be it known that I, WALTER G. DIOKER, a citizen of the United States,residing at Grilby, in the county of Grand Forks and State of NorthDakota, have invented certain new and useful Improvements in WVrenches,of which the following is a specification.

My invention relates to wrenches, and the primary object thereof is toprovide a device of this kind which is extremely simple in constructionand operation, and which may be expeditiously adjusted to receive anysize nut or pipe.

Another object contemplated by the invention is the provision of meanswhereby the movable jaw may be adjusted along the entire extent of thehandle or shank portion, and removed therefrom if the occasion sorequires.

To the accomplishment of the recited objects, and others coordinatetherewith, the preferred embodiment of my invention resides in thatconstruction and arrangement of parts hereinafter described, illustratedin the accompanying drawings, and embraced within the scope of theappended claim.

In said drawings :Figure I is a side elevation, partly in section, ofthe wrench embodying my invention. Fig. II is a rear end elevation ofthe wrench. Fig. III is a detail perspective view of the rack-block.Fig. IV is a transverse sectional view taken along lines 4 4E of Fig. I,and Fig. V is a detail perspective view of a movable pipe wrench aw.

Similar reference characters designate corresponding parts throughoutthe several views.

The numeral 5 designates a cylindrical shank having a terminallydisposed, rigidly secured jaw (6), and a movable jaw (7) which willpresently be more fully described. Commencing at the junction of therigid jaw (6) and the shank (5), and preferably on the rear portion ofthe latter, is a slot (8) which is continued longitudinally to theopposite extremital portion of said shank, and has at the base thereof arack (9).

The movable jaw (7 has the usual opening (10) for proper relativemovement with the shank (5) and in addition thereto is equipped with aslot (11) having a vertical extension which is commensurate with theextension of the opening (10) and is designed to' accommodate therack-block (12). It will also be noted that a circular depressionSpecification of Letters Patent.

Application filed November 9, 1908.

Patented Sept. 28, 1909.

Serial No. 461,754.

(11 is arranged centrally of the longitudinal extent of the slot (11).This rack-block presentsa wedge, and comprises a substantially U-shapedmember, the arms or lateral projections on the opposed ends thereofbeing indicated by the reference character .13. The outer side of therack-block is provided with a series of teeth, as 14, for engagementwith the corresponding teeth of the rack and arranged medially of thelongitudinal extent of said rack-block is a bulged portion (15) which isdevised to receive the inner distal end of the thumb screw (16), thelatter being positioned centrally of the rear portion of the movable jawand lying in a perpendicular plane with respect thereto. In thisconnection it will be manifest that the circular depression (11*) willserve for the move ment of the rack block (12).

In practical operation, when it is desired to adjust the movable jaw (7)it is only necessary to loosen the thumb screw (16) a sufiicientdistance in order to permit a slight play of the rack-block, when thesaid rackblock may be held in disengaged relation to the rack (9) andthe jaw (7), as an entirety, moved longitudinally of the shank Themovable jaw can obviously be secured in locked position by simplytightening the thumb screw (1(3). If, for any reason, it should be foundexpedient to remove the jaw (7) this operation can be readily efl'ectedowing to the continuity of the slot, and since the component parts ofthe organization are readily detachable, a movable jaw, such asdisclosed by Fig. V of the accompanying drawings, which is used forgripping pipes and the like may be substituted in place of the type ofjaw shown in Fig. I. Owing particularly to the substantially V-shapedslot, rack-block and rack, the rack-block not only engages the teeth ofthe rack but is furthermore held in wedged relation to the sides of theslot (8), thus precluding any possibility of the parts becomingdislocated or disassociated when once set.

As will be apparent a wrench constructed in accordance with my inventionis composed of a small number of parts which are simple in constructionand capable of being assembled and disassembled with the utmostfacility. Consequently, a wrench embodying these features may bemanufactured and marketed at a suiiiciently low cost to permit of itsuse generally.

What I claim as new is In a Wrench the combination of a shank having arigid jaw and a substantially V- shaped recess with a rack at the bottomthereof, a movable jaw having a substantially V- shaped slot which isenlarged at a medial point on each side thereof, a rack-block having acontour corresponding to the contour of said slot and said recess and acentral portion movable in the medial enlargement of said slot and athumb screw adapted to have bearing on said bulged portion for lockingsaid rack-block in engagement with the rack,

said recess being disposed longitudinally of the shank from the base ofthe rigid jaw to the opposite extremital point to permit removal of themovable jaw and its appurtenances.

I In testimony whereof I aflix my signature, in presence of twowitnesses.

WALTER G. DICKER.

